%0 Journal Article
%T Pluricanonical systems on surfaces with small K^2
%A Adrian Langer
%J Mathematics
%D 1998
%I arXiv
%X We prove that the bicanonical system on a surface of general type with K^2=4 has no base components and describe clusters contracted by 4K_X for a numerical Godeaux surface and 3K_X for a numerical Campedelli surface.
%U http://arxiv.org/abs/math/9802099v1